Werther, William B.
Da ren, xiao de you hua yao shuo : gei jing li de 100 feng xin = adults, there is little to say : to the manager of the 100 letters = 大人,小的有話要說 : 給經理的100封信
Tianxia Wenhua Chuban, 1990
 Buku Teks
Werther, William B.
Da ren, xiao de you hua yao shuo, gei jingli de 100 feng xin
Tian xia wen hua chu ban gu fen you xian gong si,, 1990
 Buku Teks
Bittel, Lester Robert
What every supervisor should know
Tata McGraw-Hill, 1974
 Buku Teks
Haimann, Theo
Supervision : concepts and practices of management
South-Western Pub., 1982
 Buku Teks
Bittel, Lester Robert
Pedoman bagi penyelia
Pustaka Binaman Pressindo , 1994
 Buku Teks